Change your mind as you will, you will gain no…

Banned

This speaker sounds sure on ‘you will change your mind’, right?
Isn’t it an imperative sentence?

This sentence appears in a grammar site under the category of concessive clause. It says this sentence can’t be explained as a participial construction and there’s a theory says that it’s a case of an inversion. It says only that and I can’t get what it’s saying..

Is this saying “You will change your mind anyway but then you will not gain any additional support”?
Or “Go ahead and change your mind as you will, and you will gain no additional support”?
Or “Change your mind as you will, or you won’t get any additional support”?